Blackbyte Ransomware Registry

 1title: Blackbyte Ransomware Registry
 2id: 83314318-052a-4c90-a1ad-660ece38d276
 3status: test
 4description: BlackByte set three different registry values to escalate privileges and begin setting the stage for lateral movement and encryption
 5references:
 6    - https://redcanary.com/blog/blackbyte-ransomware/?utm_source=twitter&utm_medium=social
 7    - https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/blackbyte-ransomware-pt-1-in-depth-analysis/
 8author: frack113
 9date: 2022-01-24
10modified: 2023-08-17
11tags:
12    - attack.defense-evasion
13    - attack.t1112
14logsource:
15    category: registry_set
16    product: windows
17detection:
18    selection:
19        TargetObject:
20            - HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\LocalAccountTokenFilterPolicy
21            - HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections
22            - HKLM\SYSTEM\CurrentControlSet\Control\FileSystem\LongPathsEnabled
23        Details: DWORD (0x00000001)
24    condition: selection
25falsepositives:
26    - Unknown
27level: high

References

• ProxyShell exploitation leads to BlackByte ransomware | Red Canary

  

  BlackByte ransomware leverages ProxyShell Microsoft Exchange vulnerabilities for initial access and Cobalt Strike for lateral movement.

  
  Read More

• BlackByte Ransomware – Pt. 1 In-depth Analysis | Trustwave

  

  During a recent malware incident response case, we encountered an interesting piece of ransomware that goes by the name of BlackByte.

  
  Read More

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• Activate Suppression of Windows Security Center Notifications
• Add DisallowRun Execution to Registry
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• Change User Account Associated with the FAX Service